COPD/Emphysema/Chronic Bronchitis/Asthma/Cystic Fibrosis Flashcards
COPD (chronic obstructive pulmonary disease) includes what 3 things:
- Emphysema
- Chronic Asthma
- Chronic bronchitis + small airway diseases
- > may occur independently or in combination
T/F Often patient with emphysema often has lung cancer
True
Risk factors of COPD? (5)
- Exposure to air pollution i.e. environmental irritants
- Secondhand smoke
- Occupational dusts and chemicals
- Heredity
- A history of childhood respiratory infections and socioeconomic status
COPD disease affect air flow in what way?
Obstruct
T/F COPD is a specific diagnosis.
False, COPD is not a specific diagnosis
Presenting signs of COPD:
- dyspnea
- sputum production
- Chronic cough
- reduced function
What is spirometry of lung volumes?
- The most basic and frequently performed test of pulmonary of pulmonary function
- Max amount of air expelled/1 sec
- Diagnostic & prognostic
A FEV1/FVC ratio of what after a bronchodilator has been given is a diagnosis emphysema?
<0.7
What is emphysema?
- Pathologic accumulation of air in the lungs
- Disease of exhalation
- Characterized by air trapping in the lungs
How does emphysema affect RV, TLC, and FVC1/FVC ratio?
RV - increase
TLC - increase
FVC1/FVC ratio - decrease
What is Alpha-1 antitrypsin (A-1AT)?
- protein in blood
- synthesize by liver
What does Alpha-1 antitrypsin (A-1AT) do?
- protects the lungs from the degrading actions of powerful enzyme called neutrophil elastase (↑ elastin degradation) and other proteases
- A-1AT coats cells and provides protection against the neutrophil elastase
During periods of acute inflammation what occurs to the [ ] of Alpha-1 antitrypsin (A-1AT)?
Serum concentrations of A-1AT can rise many fold during periods of acute inflammation providing protection from inflammatory damage
How does smoking affect Alpha-1 antitrypsin (A-1AT)?
Smoking causes a hyperinflammatory state which means that neutrophils -> lots of elastase and reduced effectiveness of A-1AT
How does an Alpha-1 antitrypsin (A-1AT) deficiency cause general damage?
- Lungs lack alpha-1 antitrypsin coating leaving them open to damage by neutrophil elastase
- alpha-1 antitrypsin trapped in liver causing liver damage
A-1AT deficiency and cigarette smoking damage on the individual alveoli:
- Destruction of individual alveoli
- Development of “super” alveoli
- Destruction of connective tissue supports for the very smallest airways allowing them to collapse during expiration
T/F 1 of 7 cases of emphysema are not linked to tobacco use.
True, A-1AT deficiency instead
In patient with emphysema, forced expiration causes smaller airways to collapse during expiration causing what?
- air trapping in alveoli
- results in decreased alveolar Po2
A FEV1/FEV < what is bad news?
When alveolar attachments are destroyed by cigarette smoke, what occurs when patient exhales?
- Alveolar contraction becomes increasing difficult
- Patient exhales even harder-causes collapse of small airways
First complaint of emphysema?
SOB at rest
Other clinical manifestations of emphysema?
- Apprehensive, anxious, addicted to O2
- Thin, cachectic
- Deformed chest with prolonged expiration
- Absent or non-productive cough
Clinical manifestations of chronic emphysema:
- Accompanying cardiac problems (cor pulmonale)
- Mild disease → mild hypoxemia
- With progression → hypoxemia worsens & CO2 is retained (hypercapnia)
- Chronic pulmonary metabolic acidosis
- Deconditioning
T/F Emphysema patients have a poor prognosis but PT is of benefit to them.
True